

.gbox{
    width:100px;
    height:100px;
    // width:2rem;
    // height:2rem;
    background: dodgerblue;
}

.gbtn{
    position: absolute;
    bottom:50px;
    left:50%;
    transform: translateX(-50%);
    -webkit-transform: translateX(-50%);
    -moz-transform: translateX(-50%);
    -ms-transform: translateX(-50%);
    -o-transform: translateX(-50%);
}
.guide{
    position: relative;
    .down{
        position: absolute;
        left:20px;
        top:20px;
        border: 1px solid yellow;
        color: #fff;
        width: 70px;
        height: 30px;
        border-radius:10px;
        text-align: center;
        line-height: 30px;
        background: pink;
        z-index: 10000;
}
}